Controller-regulator.



W. P, GOSPER & W. J. 0. JOHNSON.

' CONTROLLER REGULATOR; APPLICATION FILED DEC. 21, 1907.

91 5,720. Patented Mar. 16, 1909.

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W. P. OOSPER & W. J. O. JOHNSON.

CONTROLLER REGULATOR.

APPLICATION FILED DBO. 21, 1907.

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NORRIS PETERS. INC. LITMO. WASHIHGTGN. D. C

Patented, Mar. 16, 1909.

4 SHEETS-SHEET 2.

W. P. COSPER. & W. J. OJJOHNSON.

CONTROLLER REGULATOR.

APPLICATION FILED DEO.21,1907.

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W. P. GOSPER & W. J. O. JOHNSON.

CONTROLLER REGULATOR. APPLICATION FILED DEO.21,1907.

91 5,720, Patented Mar. 16., 1909.

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UNITEDSTATES PATENT oFFroE.

WILLIAM P.COSPER AND WALTER J O. JOHNSON, OF CHICAGO, ILLINOIS;ASSIGNORS, BY

I DIRECT AND MESNE ASSIGNMENTS, TO LORD ELECTRIC COMPANY, OF BOSTON.MASSA- OHUSETTS, A CORPORATION OF MASSACHUSETTS.

i CONTROLLER-REGULATOR.

Specification of Letters Patent.

Patented March 16, 1909.

Application filed December 21, 1907; Serial No. 107.567.

To all whom it may concern:

Be it known that we, WI LIAM P. CosPER' new and useful Improvements inController- Regulators; and we do hereby declare that the following is afull, clear, and exact description of the same, reference being had tothe accompanying drawings, and to the characters of reference markedthereon, which form a part of this specification;

"Heretofore various devices for regulating and delivering electricalcurrent to street car motors have been devised and attempts have beenmade. with a view to preventing the operator from turning the current onso rapidly as to endanger the motor or mechanisms driven or actuatedthereby. Such devices in the past have been more or less imperfect andhave proven ineffective to prevent the operator turning on the currentso rapidly as to be very objectionable, inasmuch as the operator with alittle practice finds it ossible to eliminate the regulation of suchevices.

Of'course, it is very im ortant to enable the current to be instant yturned oil the motor independently of any of the regu lating devices,used to retard the turning on of the current, andit is also mostimportant to enable the full current to be delivered to the motor ifdesired in reversing, inasmuch as it sometimes happens that the brakesmay be insuflicient to stop the car quickly enough to avoid accident,without assisting by reversing the motor. Heretofore devices of thisclass if effective in retarding the turning on the current to move.ahead were as effective in retarding theturning on the current'inemergencies in reversing and in consequence .precluded effective quickaction on the part of the motorman in reversing to avoid accident 111emergency.

The object of this invention is to provide a regulator for electricalcontrollers by the use of which the'current can be increased on themotor no more ra idly than the turn on maximum current until theregulator has operated to permit only gradual increase of currentdelivered tothe motor.:

It is also'an object of the invention to provide a re'gulator whichenables the current to be instantly turned off.

It is a further and very important object of the invention to affordmechanism that is inoperative when turning on the current to drive aheador when turning ofl the current but which instantly becomes operativewhen reversing, to permit the full current to be instantly delivered tothe motor if desired,

thereby enabling the reverse to operate as an instantaneously applicablebrake of. great power should occasion ever arise.

It is a further object of this invention to provide a mechanism for thepurpose described wherein a stationary element is provided with anoscillating pawl and wherein a rotatable element in the regulator isprovided with a tortuous passage through which said oscillating pawlswmgs a plurality of times before the maximum current can be ap lied indriving the motor ahead.

he invention comprises many novel features and consists in the mattershereinafter described and more fully pointed out and defined'in theappended claims.

In the drawings: Figure 1 is a top plan view of a device embodying myinvention. Fig. 2 is a similar view with the rotatable cover on theregulator, the controller handle and the reversing lever being omitted.Fig. 3 is an enlarged fragmentary section taken on line 3-3 of Fig. 2with the pawl in elevation. Fig. 4 is a similar view showing theposition of parts with current turned. oil and with the reverse lever atneutral. Fig. 5 is a similar view with the reverse lever swung toreverse position and the detent held out of engagement withthe rotatableelement of the regulator. Fig. '6 is an enlarged section taken on line6-6 of Fig. 2 with the pawl in elevation. v Fi 7 is an enlarged bottomplan View of t 1e. rotatable element or cover of the regulator. Fig. 81s an enlarged section taken on line 88 of Fig. 2. Fig. 9 is a'top' planvlew of the pivot plate for the oscillating pawl or pendulum. Fig. 10isan enlarged bottom plan view of the oscillating pawl or pendulum. Fig.11 is a section similar to Fig. 3 and illustrates a suspended pendulumor oscillating pawl. Fig. 12 is an enlarged fragmentary section similarto Fig. 6 but illustrates the suspended pawl or pendulum. Fig. 13 is anenlarged fragmentary bottomplan view of the base of the regulator. Fig.14 is an enlarged edge View of the washer shown in Figs. 6, 12, and 13.Fig. 15 is a view in elevation of the end of the locking lever.

In said drawings: A indicates ,the controller cap, through whichprotrudes the controller sh aft A and also the reverse shaft A thelatter adapted to be engaged by the reverse handle in adjusting thecontroller to deliver the current to themotor to drive ahead, or toreverse, as is usual. Bolted on the controller cap, with thecontroller-shaft A protruding centrally-therethroug'h, is the base B, ofthe regulator. This is, as shown, circular in form and provided ondiametrically opposite sides with lugs Z -b which i are slottedconcentrically with the base to receive bolts therethrough whereby thebase is connected with the controller cap. As shown, pivotally engagedon the lug b, are templet plates 6 adapted to engage between said lug band the lug a integral withthe top of the controller cap A to enablesaid base to be adjusted accurately with reference to the mechanism ofthe controller. As shown, the main portion of said base is circular andconcentric with the controller shaft A and a peripheral flange 6 extendsaround the base and as shown, is rabbeted on the outer side topermit therotatable element or regulator cap D tofit downwardly thereover.

' As shown, a comparatively long and broad slot is afforded through thebasehear the perip ery and lying approximately on achord of th circleof; the base. Seated therein at the bottom and closing the forward endof said aperture is a pivot plate B as shown in Figs. 9 and 13, which isrectangular in form, and is screwed to said base on the under sidethereof. Said pivot plate, as shown, is pro vided near its rear end witha relatively straight rib which lies approximately on a radius of thebase. At the ends ofthe plate on each side of the rib b are providedupwardly .projectin V shaped ribs b"b the same being in a inement anddirected approximately at right angles with the rib b Piv'oted upon thepivot plate B and projecting upwardly for engagement with projections uon the rotatable cover D, is the pawl, pen ulum or detent C. This, asshown,

in Fi s. 3, 4, 5, and lOcomprises a base or bar 0 aterally extended atits ends and longi- 'tudinally grooved in the bottom to engage on the Vsha ed ribs 6 -4) and transversely grooved as s own in Fig. 10, near itsrear rend-to engage on the rib b of the pivot plate. Said lateralextensions cc at each end of the bar project substantially at rightangles therefrom as shown in Fig. 10, and are cut away or inclined fromthe sides of the .bar

upwardly on the under side to permit the bar to rock laterally on thelongitudinal rib b b, the amount or amplitude of such whensprungrearwardly as shown in Figs.

4 and 5 from upright position.

Extending transversely across the slotted aperture in the base inposition to 'lie above the bar 0 and just back of the forward side ofthe upward projection C on the detent or pawl is a bar I), integral withthe base plate and which serves as a stop for the forward side of thedetent. As shown also, the forward or tail end of the bar 0 is providedwith an upwardly directed knuckle 0 which engages against the bar I)when the pawl is'inclined normally as shown in Figs. 4 and 5. Y Therotatable element. D comprises a rotatable circular cap of a diametercorrespond ing with the diameter of the base and provided with a centralinwardly projecting hub d,-which is apertured to receive the controllershaft therethrough. Said hub d is reduced in diameter near its lower endaffording a shoulder which rests upon a suitable fillet in the base, andthe reduced portion aof saidhub projects through the aperture in saidbase and is further reduced in diameter below the base to receive thewasherd which engages on the said reduced extremity d of the hub.Apertures are provided on opposite sides of said reduced extremity ofthe hub adapted to receive therein the inwardly directed, alined ends ofthe spring clip (i which is adapted to lie flat against said washer withthe ends thereof engaged in said hub, thereby rotatably securing saidcap on the base but permitting the removal thereof by first removing thespring clip. As shown, said washer d is reduced in thickness on one sidethereof affording a seat in which said rovided with an clip may lie.Said cover is integral peripheral flange d which extends downwardly overthe flange b and the lower edge of the'flange cl, bears on a suitableperipheral shoulder on said base affording a-- tight joint and renderingthe casing formed by the union of the base and'cap weatherjproof. In thetop of said cap between said hub and the peripheral flange d is provideda tortuous passage consisting of two por-- i" tions D 3 each comprisingsuccessively connected radial channels, of a width to freely receive thetop of a pawl therein and oblique channels connecting the middle of eachradial channel with the outer end of the next radial channel in advancethereof,

V of sai and all the outwardly directed teeth or properiphery.

shown, also,

wardly directedrib e", the forward'side or' thereby necessitatingsuccessive oscillations of the (pawl 'or detent and complete stoppagecover between successive advancements between oscillations. In effectsaid passage may be said to be f0 med by ratchet teeth E to E inclusivearranged around the periphery of said capwith the advance sides thereofvertical'and directed radially toward the controller shaft, and'the rearsides thereof directed obliquely and outwardly to the- Asshown in Fig,7, said teeth, are in two sets of six and three respectively with aconsiderable space between the sets though the arrangement of said teethand the number may of course vary to suitthe typeof controller to whichthe regulator 'is to be applied. I y

Integrally connected with the hub, d and the inner side ofthe cover orcap are radially directed teeth or projections e to e inclusive. These,as shown, are arranged opposite the teeth E to E respectively bearingthe same exponent and in radial alinement with the corresponding sidesof the complemental tooth on the periphery. The outer ends of said innerteeth are directed obliquelyrearward parallel with the oblique faces ofthe outer teeth, thus affording at each set of teethv a radial passageextending from. hub to periphery and an oblique passage connectingtherewith at a point intermediate the hub and periphery and extendingrearwardly to the periphery. Said channel or passage throughout thelength of the sections within the cap 'repre-..

sented by the teeth E to E and E to E inelusive is at all points butslightly wider than the top of the detent or pawl C pi'votally supportedupon the ivot plate as before described, except that iieyond the tooth eis an inclined outward tooth or projection c which serves to direct thepawl or detent from the passage D against the radial face of the tooth Ebefore entering the passage D As beyond the tooth e" is an outwhich isin alinement withthe corresponding side of the tooth E and beyond thetooth E is an inwardly directed rib E beyond which the passagesterminate at the vertical and radial advance side of the broad web orstop D which limits the rotation of-the rotatable element orcoverand'also serves when the controller shaft is at neutral position orthat when the current is turned off to hold the pawl downwardly and outof engaging position, as shown in Fig. 4.- As shown, integral with saidweb or broad stop wardly and outwardly inclmed projection e ada ted. todirect. said pawl against the tooth E with the preliminary movement 'ofsaid cover or rotatable element in turning on the current. As shownalso, said stop. D

jections e to e inclusive except a and e are the forward sides thereofare .wardly' and said arm is into closeproximity with the controller ca.D is a rear,

cut away or inclined forwardly on their rear sides, as shown in Fig. '7,to ermit said ro- ,tatable element to be immediately returned to neutralposition without necessitating the pawl travehng through said: tortuousassage. As shown, a rigid integral lug is provided on the outer slde thecover between which and an adjustable lug F v the controller handle G,engages when secured on the controller shaft A and whereby said cover orrotat'able element of necessity is caused to move with the controllershaft'in turning on.

and off thecurrent. Inasmuch as said pawl or detent C must traverse saidtortuous pas-v sage when the current is turned on, it is obvlouslynecessary to permlt an oscillation of the pendulum, pawl or detent,radially .at each of said teeth E to E inclusive, but in turningofi'tlie current, owing-to the inclined, rear sides of the teeth orprojections e to e inclusive and the fact that the pawl can tiprearwardly said pawl is tilted rearwardly by said teeth and out ofaction in returning the controller shaft to neutral.

Frequently in electric car use, it occurs that it is necessary toinstantly turn off the propelling current and to reverse the current tothe motors immediately to permit the motor to act as a brake inemergency stops to prevent accident. Such being the case,

we have provided means whereby the current may be instantly turned on infull series to reverse the motor.. This is accomplished by means of alever engaged on the controller cap A at a point H. Said lever ispivotally' beneath thebase B, and the inner end there-.-

of extends beneath said base and into the slot' therein, as shown inFigs. 3, 4, and 5, and theextremity alinernent with the bar 0, iorminthe pawl and is inclined upwardly to engage over an'upwardl andrearwardly projecting arm'C, ntegra 'withsaid-detent C, an

which is normally out of engagement with said end of the lever. .Whenthe stop or web D in said rotatable element engages the inclinedupper'endof the pawl C at neutral position however, said awl is tippedrearirected downwardly and in 'osition for the inclined end h of saidlever to engage thereover when moved to reverse position,r therebyholdingthe pawl out of action and plermitting-free movement of the coverand s aft in turning-on reversing-current. I An u wardly directed hornorarm h, is'provide on said innerextremity of the leverm position tostrike against the.

hv thereof extends into the base of 71, which projects beneath theoutwardly dlrected flange a on said segment (1 thereby preventing theend of the lever at any time eing lifted when the reverse lever G is notin place. As shown, in Figs. 1, 2 and 8, said flange it is provided witha notch corresponding with the notch in said segment a to receive thefinger detent of the reverse handle therein at neutral position. On eachside said notch a flange-h -h extends upwardly affording adjacent thereverse handle which enables the flange stops of such height as toprevent accidental lifting of the reverse. handle by the operator.

The operation is as follows: The pawl is pivotally supported on thepivot plate at tached to the fixed base and therefore is not movablewith the rotatable element and consequently operates without anytendency whatever to centrifugal action thus obviating a very seriousdefect in many prior devices. Inasmuch as the awl normally oscillateslaterally and radiadly of the cover or rotatable element the pawlaffords a succession of stops for said rotatable element when turning onthe current in driving the motor ahead, it being forced to successivelyengage the teeth E to E inclusive. Beginning at the position indicatedin Figs. 1, 2 and 4 at which the reverse handle and the controllerhandle are both neutral, the pawl is tilted down by engagement with theweb D thereon and the lever II is engaged over the arm C In thisposition should it be desired to reverse the motor it can be quickly,accomplished by drawing the reverselever JG to reverse osition thusfirmly engaging the arm C to old the pawl down as shown in Fig. 5 whenthe controller shaft A, and rotatable element or cap D may be rotated asrapidly as the operator may desire in turning on the current, said pawlbeing wholly out of action because of its engagement by said lever l-I.Having returned the controller lever and the reverse lever to neutral,the pawlis still slightly engaged by the lever H, but shifting thereverse lever ahead preparatory to deliver current to the motor topropel ahead the arm C 15 released and the weighted end of the bar 0tends 1mmediately to throw the pawl upwardly against the web D. As thecover D is rotated in turning on the current, the upper end of the pawlhavin cleared the broad web D is directed latera y by the projection (2against the radial vertical face of the tooth E, abruptly stoppingfurther rotation and necessitating a slight reverse rotation of thecontroller shaft by the operator, the pawl being in unstable equilibriumbecause swung to one side by the projection e .now swings inwardly, theamplitude of such swing being sufficient to bring it into position to bechecked by the stop or projection 6 after which it passes into theoblique portion of the passage and is directed by the oblique faces ofthe projections or teeth Ee against the radial face of the tooth E againimmediately stopping the movement of the controller shaft andnecessitating a slight reversal of the movement to release the pawl. Inlike manner the rotatable elements are gradually and intermittentlyadvanced, being successively stopped, and slightly reversed to permitthe oscillation of the pawl, which obviously acts as a pendulum in thisrespect, its amplitude of oscillation of course, depending upon theweight of the respective parts thereof, the shape of the base and itsgeneral conditions of equilibrium. Having passed through the passage Din the same manner the projection e directs the pawl against the radialface of the tooth E, and as before described permitting current supplyto be augmented by the gradual rotation of the controllershaft.

As the pawl enters the passage D the rotation progresses intermittentlygradually increasing the current until it is turned on to the fullestextent possible. When it is desirable at any time to cut off thecurrent, the inclined faces .of the teeth e to 0 inclusive and also theweb D and also the fact that the pawl is not supported to resist thereturn movement of the cover D and shaft, permitthe controller shaft andcover rotatable therewith to be instantly returned to neutral at whichpoint the pawl is, of course, automatically swung down again to beengaged by the end of the lever H, should it be desired. to instantlyreverse the current in the motor.

Of course, we are well aware that the detent or pawl may be supported inother ways than that shown, as for instance, a, detent.

C may be supported as shown in Figs. 11 and 12, that is to say, a pin orrodc 1s secured in the bar orweb b and a c0rrespond- 'ing barb paralleltherewith and-on which the detent C swings. Said pin or rod extendsthrough said awl at a right angle with the radius passing from thecontroller shaft to the center of said pawl. The ends .of said aperturesor bore are flared or countersunk as shown in dotted lines in. Fig. 1.1,to

permit said detent to-swing rearwai dly, as shown in dotted lines 1nsaid Flg. 11, so that the arm 0? thereon ma be engaged by the end of thelever H. i course, when this construction is used a forwardlyextending,-

counterweighted base 0 is used to normallv support the pawl in positionto time or regulate the movement of the cover.

The detent may of course, be constructed in a variety of ways, and theparticular form of lever adapted to hold the detent out of action whenreversing may be varied.

Very many details of construction are of necessity more or less variedto suit the particular type of controller to which to be applied, andthe requirements and service, and owing to the wide range of equivalentand alternative constructions that may be employed and which we have notattempted to specifically describe, We do not purpose limiting thisapplication for patent otherwise than necessitated by the prior art.

e claim as our invention:

1. A controller regulator embracing mech anism provided with a tortuouspassage, means movable inthc passage acting nor mally to retard theturning on of pro elling current but permitting instantaneous y cuttinoff the current and means coaeting with sai means to hold the same outof action in turning on full reversing current.

2. A controller regulator comprising a rigid element rovided with acentral aperture, a rotatab e element having a hub integral therewithadapted to extend through the aperture, a detachable s ring member forretaining the rotatable e ement in place and means for intermittentlyretarding the rotation of said rotatable element.

regulator for controllers for motors embracing means having teethproviding a passage therebetween, oscillating means ada ted to engage inthe passage acting to retar the turning on of propelling current andpermitting of instantaneously cutting off the current, a reversemechanism and means operated by thereverse mechanism adapted to hold theoscillating means out of action in turning on reversing current.

4. A timin device comprising a rigid base, a rotatable 'e ement and anon-rotatable retarding element adapted to move radially of therotatable element to block rotation therc of and adapting the rotatableelement to rotate between radial movements thereof.

5. A regulator for the purpose specified embracing mechanism havingradial passages, sage acting to retard the turning on oi current todrive a motor in'one direction and means acting to hold said retardingmechanism out of action in turning on full reversing current. p

6. A regulator of the class described embracing a stationary base,anoscillating retarding member supported thereon, ctatameans ad apted toswing into each pasble means adapted to engage the oscillating memberand ,-retarded in turning on.of ourrent to drive a-motor in onedirection and a lever acting automatically to hold said retardingmechanism out of action in turning on full reversing current.

7. A timing element comprising a station ary base, a pawl pivotallysupport-ed 'in the base adapted to rock radially and rotatable means forrocking the pawl and advancing after the pawl has rocked a suitablenumber of times.

8. A timing element comprising a rigid base, a pawl, means whereby thepawl is supported in unstable equilibrium and a rotatable coverunconnected with the pawl adapted by rotation to actuate the pawl, saidpawl adapted to intermittently permit the cover to rotate. v I

9. In a regulating mechanism for electrical controllers the controllershaft, a pawl, a plate having a tortuous passage therein for the awl,one of said elements secured on the shait, the other stationary andmeans holding said elements out of engagemontin l'uversing current inthe motor contr lled'.

10. A timing element comprising a base, a cover thereon and coactingelements for retarding rotation of the cover, one su ported in unstableequilibrium and the ot ier' element providing a tortuous passage.

11. In a device of the class described a rigidmember, a rotatablemember, a pawl inclosed by said members, means integral with therotatable member for engagement by the pawl adapting the cover tointermittently rotate, and coacting .elements, one connected with -.thepawl and the other ada ted to engage said element to adjust the paw topermit the cover to continuously rotate.

12. In a regulating mechanism for electrical controllers a rotatableelement connected with the controller shaft provided with a passage, anon-rotatable element secured on the controller and adapted to oscillateacross said passage in the rotatable element to retard turning on ofcurrent and means separating said elements in reversing therebypermitting reversing current to be instantaneously turned on and withoutretardation.

1.3. In a regulator for electrical controllers embracing a stationarybase, surrounding the controller shaft, a cover therefor movable withthe shaft, a pawl on one adapted tocn. gage stops on the other to retardthe turning on of current and mechanism operated by the reverse handleadapted to hold said pawl out of action and permitting the reversingcurrent to be turned on without retardation.

14. A regulator for controllers embracing a pawl, an arm securedthereto, rotatable Y gage said arm to throw said pawl out of ac tion inreversing.

15. A controller regulator consistingof a base, a rotatable element, apawl supported to rock radially, a bar limiting the rocking movement ofthe pawl in each direction, a

passage in the cover in which the pawl nor mally engages, and means foradjusting the pawl out 01' the passage.

16. In a regulator for electrical c n trollers for car motors astationary base surrounding the controller shaft,.a cover thereformovable-with the shaft, a pawl secured .on the one and projections onthe otheradapted by mutual engagement to retard the turning on ofcurrent, a reverse handle on the controller and mechanism operated byreverse handle adapted to hold said retarding elements out of actionwhereby full reversing current may be delivered to the motor instantly.

'17. A regulator for electrical car motor controllers embracing A astationary base surrounding the controller shaft, a cover thereforrotatably secured to the base and movablewith said shaft, a pawl pivotedon the base and adapted to successively engage radial. projections inthe cover to retard the turning on of maximum current to propel the carahead, a reverse handle and a lever operated thereby in reversingadapted to hold said pawl from engagement with the cover whereby fullreversing current may be instantly turned on to the motors.

18. A. regulator for electrical car motor controllers embracing astationary base sur rounding the controller shalt, a cover thereformovable with said shafts, an upstanding pawl pivoted on the base andnormally adapted to engage projections on the cover to retard theincrease of current to the motors, a ,reverse handle and operative meansactuated thereby adapted to hold said pawl out of action when reversing.

19. A regulator for electrical car motor controllers embracing a pawlpivotally supported adjacent the controller shaft, an ele ment rotatablewith the shaft and having a tortuous passage therein to receive thepawl,

. said passage affording abrupt bends at which the pawl holds the shaftfrom rotation to retard the turning on of current, a reverse handle andlever actuated thereby in reversing to hold said pawl out of engagementwith said. rotative element whereby maximum reversing current may beinstantly delivered to the motor. I

20. A controller regulator embracing a base, a pivot plate, ribsintegral therewith, a

pawl on the pivot platenotched to receive the ribs, a cover and teethintegral therewith providing passa es therebetween.

21. A centre or regulator embracing, a base, a pivot plate, ribsintegral therewith, a pawl on. the pivot plate notched to receive theribs, a cover, teeth integral therewith providing passages therebetween,an extension integral with the pawl and a lever extending at one endthrough a slot in the base adapted to engage the extension.- to adjustthe pawl. out of ooerative position.

' 22. A contro ler regulator embracing means for retarding the turningon of propelling current, a reverse mechanism, a lever operated. bymovement of the reverse handle for adjusting the retarding means out ofoperative position and. coacting means on the lever and reversemechanism for preventing removal of the lever.

23. In a controller regulator of the class described an upstandingoscillating pawl, an element rotatable with the controller shaft adaptedto be intermittently engaged by the pawl to retard its rotation. innormally turning on the current and mechanism actuated by the reversehandle acting to hold said pawl out of action. to permit ofinstantaneously turning on maximum reversing current. j g

24. A controller regulator comprising a base, a rotatable cover thereon,coacting mechanisms for retarding rotation of said cover, a lever foradjusting one of said mechanisms out of operative position, a reversingmechanism, a notched segment, a flange integral therewith, a flangeintegral with the lever adapted to engage beneath the afore said flangeto prevent removalof the lever, and means for preventing accidentalremoval of the reversing handle.

25. In a device of the class described the combination with a controllerregulator, of means for adjusting the controlling ele-- ments of thecontroller regulator out of op erative position, a reversing mechanism,a handle for operating the same and to simultaneously operate theaforesaid means, means for preventing removal of the aforesaid means andmeans for reventing accidental removal of the hand e.

26. In a controller regulator a base, a rotatable cover provided with atortuous passage, a vertical pawl pivotally supported to move in thepassage, oppositely directed extensions integral with the pawLIa stopfor engaging one of the extensions and mechanism for engaging theopposite extension to adjust the pawl out of the passage.

27. In a controller regulator of the class described a detent adapted tooscillate radially and at an angle with the radius to retard therotation of the controller shaft in normallyturning on the current and alever operated by the reversehandle acting to shift said detent out ofaction to permit instantaneous application of maximum. reversingcurrent.

28. In a controller regulator a base, an oscillating'member restingthereon. a rotatable 5 pawl resting thereon, and a rotatable memerhaving radial passages, into each of which the pawl must swing beforeeachadvancement of the rotatable element.

30. In a controller regulatcv a base, a pawl resting thereon, arotatable member aving radial passages into each of which the pawl mustswing before each advancement of the rotatable element and a passageafiording communication between the radial passages into which the pawlis ada red to pass.

31. In a device of the c ass described coactin retarding elements, anextension inwlth one of the same and means tegra adapted to engage saidextension to shift one retarding element out of engagement with theother; 32. In a controller regulator a rigid element, a pivot platesecured "the reto, a pawl resting thereon and a rotatable memberacounterbalanced pawl supported by said adapted toro'ck said pawl backand forth to pivot 1plate and a rotatable member adapted to me said pawlon its pivot to successively block rotation thereof; g I i 34. In adevice of the class described a fixed element, a pivot plate securedthereto, a counterbalanced pawl sup orted by said pivot plate, arotatable mem er adapted to rock said pawl on its pivot to successivelyblock rotation thereof, an extension secured to the pawl and meansadapted to engage said extension to throw said pawl out of operativeposition.

35. In a controller regulator a radially oscillatable pendulum, arotatable element and teeth integral therewith having correspondingsides abrupt and the opposite corresponding sides inclined, said teethadapted toengage the pendulum to cause intermittent movement of therotatable element in one directioh and said teeth adapted to ass overthe pendulum when the rotatable e ement is moved oppositely.

, In testimony whereof we have hereunto subscribed-our names in thepresence of two subscribing witnesses.

WILLIAM P.- COSPER. WALTER J. O. JOHNSON.

Witnesses:

K. E. HANNAH, LAWRENCE REIBSTEIN.

